| GND | --- | 1 | U ------ |
24 | --- | VCC |
| D0 | <-> | 2 | 23 | <-- | A0 | |
| D1 | <-> | 3 | 22 | <-- | A1 | |
| D2 | <-> | 4 | 21 | <-- | A2 | |
| D3 | <-> | 5 | 20 | <-- | A3 | |
| D4 | <-> | 6 | 19 | <-- | A4 | |
| D5 | <-> | 7 | 18 | <-- | A5 | |
| D6 | <-> | 8 | 17 | <-- | A6 | |
| D7 | <-> | 9 | 16 | <-- | R/!W | |
| CS0 | --> | 10 | 15 | <-- | !CS5 | |
| !CS1 | --> | 11 | 14 | <-- | !CS4 | |
| !CS | --> | 12 | 13 | <-- | !CS3 |
Quite rare these days: easier to get an ordinary JEDEC pinout RAM chip and wire up an adapter board.